KR20150025240A - Tunnel inspection apparatus - Google Patents

Abstract

A tunnel inspection apparatus is disclosed. The tunnel inspection apparatus is used by being installed in a vehicle which enters a tunnel, and comprises: a tunnel sensing unit which transmits entry information when the vehicle enters the tunnel, and transmits leaving information when the vehicle leaves the tunnel; a tunnel photographing unit which photographs the wall surfaces of the tunnel; a storage unit which saves images photographed by the tunnel photographing unit; and a control unit which determines photographing conditions on whether or not the vehicle is located inside the tunnel by receiving entry and leaving information from the tunnel sensing unit, and controls the tunnel photographing unit to photograph the inside of the tunnel in accordance to the photographing conditions. In addition, the images saved in the storage unit includes the time information of at least one point from the receiving time of the entry information to the receiving time of the leaving information. Therefore, the provided tunnel inspection apparatus can perform photographing and inspection of the wall surfaces of the tunnel in a short period of time by connecting the tunnel photographing unit with the tunnel sensing unit, the storage unit, and the control unit in order to automatically sense the tunnel without control by an inspection worker.

Description

[0001] TUNNEL INSPECTION APPARATUS [0002]

The present invention relates to a tunnel inspection apparatus, and more particularly, to a tunnel inspection apparatus installed in an automobile entering an interior of a tunnel to check a wall surface by photographing a wall surface inside the tunnel.

Structures are subject to deterioration and damage over time due to natural and environmental factors. In order to maintain the function of the aging structure and extend its service life, it is necessary to carry out continuous and efficient inspection and diagnosis of the structure.

The most basic survey item to perform the inspection and diagnosis is the appearance survey. Investigation of the concrete lining surface, especially the wall surface of the tunnel, is very important in evaluating the inside and outside condition of the structure and determining the items, procedures and methods to perform the local precision safety diagnosis in the next step .

However, the conventional method of surveying concrete defects depends on visual inspection by manpower. Therefore, it is difficult to accurately quantify the test results, and because it relies on personal knowledge and experience, it lacks objectivity. There are disadvantages that it is impossible to investigate where access is difficult. In addition, since the investigated information is stored as a document, effective data management can not be performed.

In addition, since it is impossible to accurately grasp not only the history of the surrounding conditions but also the current surrounding conditions, it can not be compared with the past test results, and it is impossible to obtain objective data. In the case of a large-sized tunnel, It is almost impossible.

In this connection, Korean Patent Registration No. 10-0248647 discloses a device for detecting the peeling of a wall surface of a tunnel (hereinafter referred to as "prior art"). The conventional art has a structure in which the light emitting heater 4 is mounted on the travelable vehicle 2 on which the inspection of the tunnel wall surface 1 has to be carried out via the telescopic arm device 3, An infrared camera 6 for measuring the infrared rays radiated from the tunnel wall surface 1, a distance sensor 7 for measuring the distance traveled by the vehicle 2 and the truck 5, A recording device 8 for recording both the temperature distribution image obtained by the infrared camera 6 and the travel distance data obtained by the distance sensor 7 and a temperature distribution image obtained by the infrared camera 6 in real time time display device 9 is mounted. In the recording apparatus 8, the temperature distribution image and the travel distance data recorded on the tape 10 are reproduced by the external reproducing apparatus 11 and processed by the image processing apparatus 12. [

However, the peeling detection apparatus of the related art can not be used to start and stop the devices for photographing the tunnel wall surface 1 such as the infrared camera 6, the recording apparatus 8, the distance sensor 7, And there was an inconvenience that the user must watch the display device 9 all the way during the inspection to check whether or not the photographing is normally performed.

Further, since the inspector must inspect the photographed temperature distribution image for confirming the separation of the tunnel wall surface 1 after the photographing is completed, it takes a long time to complete the inspection for the tunnel, There is a problem that it takes a few days to complete the investigation of the tunnel wall surface 1.

Further, after the photographing is completed, the vehicle 2 is operated to check the image stored in the recording device 8, and must move to the inspection room where the reproducing device 11 and the image processing device 12 are installed. This is considered to be a major obstacle to the repair work of the tunnel which requires urgent repair.

In addition, since the classification criterion for the image in which the defect is observed is performed by subjective judgment based on the experience of the inspector examining the image, even if the inspection result on the tunnel wall surface 1 is recorded as image data, There was a problem that objectivity was inevitably lacking.

In addition, along with the speed of development of optical devices which are advancing day by day, and the technology of digitizing and controlling this data is rapidly progressing, there has been a constant demand for improvement of the conventional inspection apparatuses.

(0001) Korean Patent Registration No. 10-0248647 (Registration date: December 20, 1999)

An object of the present invention is to automatically detect a tunnel without operation of an inspector and perform photographing and inspecting of a wall surface of the tunnel in a short period of time. An object inspection result for a tunnel wall surface can be derived and stored in a database in real time, And to provide a tunnel inspection apparatus which is lightweight and has mobility.

According to the present invention, the above object is achieved by providing an information processing apparatus, which is installed and used in an automobile entering into a tunnel, transmits entrance information when the automobile enters the tunnel, and dispatch information when the automobile leaves the tunnel A tunnel detection unit; A tunnel photographing unit configured to photograph a wall surface of the tunnel; A storage unit for storing an image photographed by the tunnel photographing unit; And a control unit for receiving the entry information and the departure information from the tunnel detection unit to determine a photographing condition as to whether the car is located inside the tunnel and to control the tunnel photographing unit to photograph the inside of the tunnel according to the photographing condition, And the image stored in the storage unit includes time information of at least one time point from the reception of the incoming information to the reception of the departure information.

It is another object of the present invention to provide a tunnel which is used in an automobile entering a tunnel and transmits entrance information when the automobile enters the tunnel and transmits deviation information when the automobile leaves the tunnel, Sensing unit; A tunnel photographing unit configured to photograph a wall surface of the tunnel; A storage unit for storing an image photographed by the tunnel photographing unit; And a control unit for receiving the entry information and the departure information from the tunnel detection unit to determine a photographing condition of whether the car is located in the tunnel, and controlling the tunnel photographing unit to photograph the inside of the tunnel according to the photographing condition And the image stored in the storage unit includes distance information of at least one point from the reception of the incoming information to the reception of the departed information.

Wherein the control unit is connected to an ECU of the automobile to detect a vehicle speed of the automobile and to detect the position of the automobile according to the vehicle speed and time after receiving the entry information, In the case of a still image, it is possible to control the images to be successively photographed.

The control unit may determine whether an image photographed by the tunnel photographing unit is within the range of the normal information to check whether the wall surface of the tunnel is abnormal or not have.

The control unit records normal information in the storage unit when the tunnel wall surface is normally checked, and records the abnormal information in the storage unit when an abnormality is detected in the wall surface of the tunnel.

The tunnel sensing unit may include at least one of an optical sensor, a distant sensor, and a GPS (Global Positioning System).

Wherein the tunnel photographing unit comprises a pan-tilt device for adjusting the photographing angle of the infrared camera, the infrared photographing camera being connected to a satellite navigation device and navigation of the automobile, And the infrared camera and the pan tilt device can be controlled according to the tunnel information.

And a binding device detachably coupling the tunnel photographing unit and the tunnel sensing unit to the roof of the automobile.

According to the present invention, it is possible to provide a tunnel inspection apparatus that connects a tunnel photographing unit to a tunnel sensing unit, a storage unit, and a control unit to automatically detect a tunnel without operation of an inspector and perform photographing and inspection of the tunnel wall in a short time do.

In addition, since the control unit records the normal information and the abnormal information on the wall surface of the tunnel in the storage unit, the objective inspection result for the tunnel wall surface can be derived and stored in the database in real time, and the volume can be modularized to achieve miniaturization, It is possible to provide a tunnel inspection apparatus.

1 is a view showing an operating state of a tunnel inspection apparatus according to an embodiment of the present invention.
2 is a view showing a connection configuration of the tunnel inspection apparatus of FIG.
Fig. 3 is a view showing a photographed image of the tunnel inspection apparatus of Fig. 1;
Fig. 4 is a view showing a data sheet of a photographed image of the tunnel inspection apparatus of Fig. 1; Fig.
5 is a view showing the installation state of the tunnel inspection apparatus shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

The tunnel inspection apparatus of the present invention automatically detects a tunnel without operation of an inspector and performs imaging and inspection of the wall of the tunnel in a short time. An objective inspection result of the tunnel wall surface can be derived and stored in a database in real time , It is made so as to have miniaturization, light weight, and mobility.

FIG. 1 is a view showing an operation state of a tunnel inspection apparatus according to an embodiment of the present invention, FIG. 2 is a view showing a connection structure of the tunnel inspection apparatus of FIG. 1, FIG. 3 is a view FIG. 4 is a view showing a data sheet of the tunnel inspection apparatus of FIG. 1, and FIG. 5 is a diagram showing a state in which the tunnel inspection apparatus of FIG. 1 is installed in the vehicle.

1 and 2, a tunnel inspection apparatus 1 according to an embodiment of the present invention is installed in an automobile 2 entering into a tunnel 3 and has a wall surface W The tunnel image sensing unit 10, the tunnel image sensing unit 20, the storage unit 30, and the control unit 40, as shown in FIG.

The tunnel detection unit 10 is provided in the vehicle 2 and transmits entrance information when the vehicle 2 enters the tunnel 3 and outputs the exit information when the vehicle 2 leaves the tunnel 3 . The tunnel sensing unit 10 may include at least one of an optical sensor, a distant sensor, and a GPS (Global Positioning System).

In an embodiment of the present invention, a satellite navigation device (not shown) and a laser distance sensor 11 are simultaneously used in the tunnel sensing unit 10.

The laser distance sensor 11 measures the exact distance by emitting a laser toward the target and then detecting the returned laser. Although not shown, the laser distance sensor 11 comprises a light generator for generating a laser, a photodetector for sensing the returned laser beam, and a counter for time calculation. The distance measurement is to calculate the distance by emitting a good directional laser and measuring the time it has been reflected from the target.

The control unit 40 receives entrance information and departure information from the tunnel sensing unit 10 and determines shooting conditions for determining whether the car 2 is located inside the tunnel 3 and controls the tunnel shooting unit 20 To photograph the inside of the tunnel 3.

The tunnel photographing unit 20 photographs the wall surface W of the tunnel 3. The tunnel photographing unit 20 is provided with an infrared camera 21 of several frames to 25 frames per second. When an infrared camera 21 having a performance of 25 frames per second (FPS) is installed to take an image, it is possible to take a clear image without shaking even at high speed driving (50 to 80 km / h).

The storage unit (30) stores an image photographed by the tunnel photographing unit (20). The image stored in the storage unit 30 includes at least one of time information and distance information at at least one time from reception of incoming information to reception of departure information.

When the tunnels 3 preset in the control unit 40 approach the control unit 40 during the operation of the automobile 2, the navigation unit connected to the navigation unit is controlled by the control unit 40, A tunnel close signal is transmitted to the base station 40.

The controller 40 activates the laser distance sensor 11 by means of the tunnel proximity signal and the laser distance sensor 11 transmits the incoming information to the controller 40 upon entering the tunnel 3. The control unit 40 controls the tunnel photographing unit 20 to start photographing of the tunnel wall surface W based on the entry information.

Thereafter, if the laser distance sensor 11 does not detect the tunnel wall W, the controller 40 transmits deviation information. Thereafter, the control unit 40 controls the tunnel photographing unit 20 to stop photographing.

The control unit 40 sends a signal to the storage unit 30 so that information on the vehicle speed and travel distance of the automobile 2 ECU is recorded in the storage unit 30 upon receipt of the incoming information. The inspector can confirm the position of each image in the tunnel 3 based on the information on the vehicle speed and the moving distance.

The storage unit 30 stores information on the vehicle speed and the travel distance together with the image of the photographed wall surface W. [ As shown in FIGS. 3 and 4, the information on the vehicle speed, the shooting time, and the moving distance may be stored in the form of data that is mapped for each picture or outputted as a table.

The control unit 40 records normal information in the storage unit 30 when the tunnel wall W is normally checked and records the abnormal information in the storage unit 30 when the tunnel wall W is abnormally confirmed. FIG. 4 shows that the normal information and the abnormal information can be written in the information column as symbols O, X.

The control unit 40 determines whether or not the image of the tunnel wall W is normal or abnormal based on the degree of difference in brightness between pixels of the still image. (30). Accordingly, even if the inspector does not perform the full inspection on the entire image, the inspector can output only the still image on which the abnormal information is recorded and inspect it, so that the abnormality of the tunnel 3 can be checked quickly.

On the other hand, the photographed normal information of the tunnel 3 is stored in the storage unit 30, and the control unit 40 judges whether the image photographed by the tunnel photographing unit 20 is within the range of the normal information, It is also possible to check whether the wall surface W is abnormal. Accordingly, since it can be compared with the normal information photographed at the time of each photographing, it is possible to manage the history by the position of the wall surface W through regular photographing of the wall surface W of the tunnel.

As shown in FIG. 3, the control unit 40 may calculate the vehicle speed and the travel distance so that the images photographed by the tunnel photographing unit 20 are continuously photographed. That is, the control unit 40 controls the infrared camera 21 in accordance with the frequently changing vehicle speed and moving distance so that the still images S1, S2, and S3 can share certain portions A1 and A2 of the images with each other. The number of frames is controlled.

The cracks C can be confirmed as a whole even if the cracks C of the tunnel wall W are elongated as the static images S1, S2 and S3 share certain portions A1 and A2. On the other hand, in the case of the infrared camera 21 of 25 FPS or more, the number of frames per second is automatically reduced during slowing down, thereby remarkably reducing the size of the stored data.

2, the tunnel inspection apparatus 1 of the present invention transmits photographed data stored in the storage unit 30 through the wireless communication device 50 in real time after being photographed, You can check the test results on the computer screen in the office within a few seconds to several minutes after completion. Therefore, when the maintenance work of the tunnel 3 is urgently required, an immediate maintenance plan can be established after the completion of the photographing.

2 and 5, the tunnel photographing unit 20 includes a pan-tilt device 22 for adjusting the photographing angle of the infrared camera 21, 2, and controls the infrared camera 21 and the pan / tilt device 22 according to the tunnel information of the tunnel 3.

That is, since there is a difference in the height, width, and brightness of the wall W of the tunnel 3 with respect to each other, the setting of the infrared camera 21 optimized for each tunnel 3 previously photographed in the storage unit 30 The position of the lens, and the pan tilt angle are stored, so that an optimal image can be photographed for each tunnel 3. It is preferable that the tunnels 3 having the same set value are set to share the set values so that the set values of several tens to several hundred tunnels 3 stored in the storage unit 30 are not stored in duplicate.

5, the tunnel inspection apparatus 1 according to an embodiment of the present invention includes a tunnel capturing unit 20 and a tunnel sensing unit 10 detachably coupled to a loop of the vehicle 2, (60). Although not shown, the control unit 40, the storage unit 30, and the wireless communication device 50 can be installed separately in the vehicle 2, and of course, together with the tunnel photographing unit 20 and the tunnel sensing unit 10 And may be coupled to the binding apparatus 60. [

The binding apparatus 60 is formed in the form of a pair of bars 61 to which the tunnel photographing unit 20 and the tunnel sensing unit 10 are coupled at the top. The pair of bars 61 have elongated holes 62 formed at both ends thereof and are easily assembled to the roof rack R by the bolts 63 and the butterfly nuts 64. The tunnel inspection apparatus 1 can be easily attached to and detached from the roof rack R of the automobile 2 provided at various intervals by the binding apparatus 60 and the inspection of the tunnel inspection apparatus 1 is facilitated It can be easily moved to another vehicle.

According to the present invention, the tunnel photographing unit 20 is connected to the tunnel sensing unit 10, the storage unit 30, and the control unit 40, thereby automatically detecting the tunnel 3 without operation of the inspector, It is possible to provide a tunnel inspection apparatus 1 that performs photographing and inspection of the tunnel inspection apparatus 1 within a short time.

The control unit 40 records the normal information and the abnormal information of the tunnel wall W in the storage unit 30 so that objective inspection results of the tunnel wall W can be derived and stored in the database in real time, It is possible to provide a tunnel inspecting apparatus 1 that is small in size, light in weight, and movable.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: Tunnel check device 2: Automobile
3: Tunnel 4: Tunnel wall
10: Tunnel sensing part 20: Tunnel photographing part
30: storage unit 40: control unit
50: wireless communication device 60: binding device

Claims (8)

It is installed and used in a car entering the tunnel,
A tunnel detection unit for transmitting entrance information when the automobile enters the tunnel and for sending out information when the automobile leaves the tunnel;
A tunnel photographing unit configured to photograph a wall surface of the tunnel;
A storage unit for storing an image photographed by the tunnel photographing unit; And
A control unit for receiving the entry information and the departure information from the tunnel detection unit to determine a photographing condition that the car is located within the tunnel and to control the tunnel photographing unit to photograph the inside of the tunnel according to the photographing condition Including,
Wherein the image stored in the storage unit includes time information of at least one time point from when the incoming information is received to when the departing information is received.
It is installed and used in a car entering the tunnel,
A tunnel detection unit for transmitting entrance information when the automobile enters the tunnel and for sending out information when the automobile leaves the tunnel;
A tunnel photographing unit configured to photograph a wall surface of the tunnel;
A storage unit for storing an image photographed by the tunnel photographing unit; And
And a control unit for receiving the entering information and the departure information from the tunnel detecting unit to judge a photographing condition as to whether the car is located inside the tunnel and controlling the tunnel photographing unit to photograph the inside of the tunnel according to the photographing condition and,
Wherein the image stored in the storage unit includes distance information of at least one point from the time of receiving the incoming information to the time of receiving the leaving information.
The apparatus of claim 1,
A vehicle speed sensor connected to the ECU of the vehicle to detect a vehicle speed of the vehicle,
Detecting the position of the automobile according to the vehicle speed and time after receiving the entry information,
Wherein when the image taken by the tunnel photographing unit is a still image, the control unit controls the images to be continuously photographed.
The method of claim 3,
The photographed normal information of the tunnel is stored in the storage unit,
Wherein the control unit judges whether the image photographed by the tunnel photographing unit is within the range of the normal information and checks whether the wall surface of the tunnel is abnormal.
5. The method of claim 4,
Wherein the control unit records normal information in the storage unit when the tunnel wall surface is normally checked and records the abnormal information in the storage unit when an abnormality is detected in the wall surface of the tunnel.
3. The method according to claim 1 or 2,
Wherein the tunnel detection unit includes at least one of an optical sensor, a distant sensor, and a GPS (Global Positioning System).
3. The method according to claim 1 or 2,
Wherein the tunnel photographing unit comprises a pan-tilt device for adjusting the photographing angle of the infrared camera,
Wherein the control unit is connected to a satellite navigation apparatus and navigation system of the automobile, and controls the infrared camera and the pan / tilt apparatus according to the tunnel information of the tunnel.
3. The method according to claim 1 or 2,
Further comprising a binding device detachably coupling the tunnel photographing section and the tunnel detecting section to the loop of the automobile.

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